Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"duong ve java slippers" » "duong va java slippers", "duong vien java slippers", "duong van java slippers", "duong ve java slippery", "duong ve java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duong ve java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong ve java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong ve java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong ve java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.